Ceramic Knife, 3" Ceramic Knife, 3 inches Blade Material: white zirconium oxide ceramic blade, ABS handler. Model: 3" ceramic knife Size: Available in 3", 4", 5", 6" and 7" Our ceramic knives are made of zirconium with yttrium oxide (TZP), the hardness would close to the diamond, which ensures a longer lasting cutting than other traditional steel knife.Hygiene: No smell, or oxidation on the blades, will transfer when touch the foods; Non-porous surface will not let bacteria infiltrate the blade; Cleaning convenience, the foods never stick to the smooth surface. For more information, pleasecontact usdirectly, we will get back to you soon.